Process of manufacturing plates of insulating substances.



PATENTED NOV. 10, 1903.

J. JUSTUS. PROCESS OF MANUFACTURING PLATES OF INSULATING SUBSTANCES.

APPLIUATIDN FILED MAR. 9, 1903.

Z Z m I UNITE STATES ZE atented November 10, 1903.

PATENT OFFICE.

PROCESS OF MANUFACTURING PLATES 0F INSULATING SUBSTANCES.

SPECIFICATION forming part of Letters Patent No. 743,882, dated November 10, 1903.

Application autumn 9,1903. Serial in. 146.978. (No model.)

To ctZZ whom it may concern.-

Be it known that I, JOHANNE JUSTUS, a subject of the Emperor of Germany, residing at Berlin-Halensee, Empire of Germany, have invented certain new and useful Improvements in Processes of Manufacturing Plates of Insulating Substances, ofwhich the following is a specification.

This invention relates to an improved method of manufacturing insulating-plates of kiesel uhr or like substances; and the object therebfis to produce strong, durable, and efficient insulating plates of various lengths and widths, as desired.

In order that the presentinvention maybe fully understood, reference will now be had to the accompanying drawings, in which- Figure 1 is a perspective view of one bar of insulating substance. Fig. 2 is a similar view of a plurality of insulating-bars joined together by means of wire or other fabric and arranged on one side of the fabric. Fig. 3 is a similar view of a plurality of insulating-bars joined together by means of Wire or other fabric and arranged on both sides of the fabric.

The process of manufacture is as follows: Single bars are first pressed out of the insulating substance, preferably of semicircular or. segmental section, as shown in Fig. 1 of the accompanying drawings. These bars are then laid on their fiat sides closely side by substance may also be applied to the other side of the flexible foundation or wire fabric, whereby an entire covering of the wire fabric is obtained, together with a better connection of the insulating-bars with the fab ric. The plates formed of these semicircular bars have, owing to the rounded groove or furrow between the separate bars, great flexibility, which renders the manufactured plates very suitable for incasing strongly-curved bodies-such, for instance, as; thin pipes. The plates thus formed are very strong and yet very flexible, so that they may be easily fitted, and the sharp-cornered recesses form a good hold for the plaster which is applied.

In similar manner to what has been hereinbefore described the wire fabric may also be coated on both sides with the bars, preferably in such away that the bars lying underneath alternate with the bars lying above the fabric-that is to say, the thickest part of the lower bars comes immediately underneath the junction of two of the upper bars, and vice versa, as is shown in Fig. 3. An insulatingplate of wavy or corrugated section is thus formed, having a center foundation of wire network, which is of uniform strength, as the diminishing thickness of the bars on the one side owing to their curved form is practically equalized by the correspondinglyincreasing thickness on the other side.

I declare that what I claim is- I 1. A method of makinginsulating-plates of insulating material, consisting in pressing an insulating substance into bars, laying the bars so pressed side by side on a foundation of wire network, and causing the bars to adhereto the network.

2. A method of making insulating-plates of insulating material consisting in pressing insulating substance into bars of segmental section, laying the bars on a foundation of wire network and causing the bars to adhere to the network substantially as described and set forth.

3. A method of making insulating-plates of insulating material consisting in pressing insulating substance into bars laying the bars on both sides of a foundation of wirenetwork and causing the bars to adhere to the network substantially as set forth.

4. A method of making insulating-plates of insulating material, consisting in pressing kieselguhr into bars, laying the bars so pressed side by side on a strong flexible foundation, causing the bars to adhere to the foundation substantially as and for the purpose described.

5. A method of making insulating plates of insulating material consisting in pressing kieselguhr into bars of segmental section laying the bars on a strong flexible foundation, causing the bars to adhere to the foundation, substantially as and for the purpose described.

6. A method of making insulating-plates of insulating material consisting in pressing kieselguhr into bars of segmental section, laying the bars on. a foundation of wire network and causing the bars to adhere to the net- In testimony whereof I have hereunto set Work, substantiallyas described and set forth. my hand in presence of two subscribing wit- \0 7. A method of making insulating-plates of nesses.

insulating material consistin" in pressing T T kieselguhr into bars laying m3 bars on both JOHANLE JUSTL sides of a foundation of wire network and Witnesses:

HENRY HASPER.

causing the bars to adhere to the network, WOLDEMAR I-IAUPT, substantially as set forth. I 

